CN103912410A - ERG mixer of dual-gas pickup structure - Google Patents
ERG mixer of dual-gas pickup structure Download PDFInfo
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- CN103912410A CN103912410A CN201310006731.2A CN201310006731A CN103912410A CN 103912410 A CN103912410 A CN 103912410A CN 201310006731 A CN201310006731 A CN 201310006731A CN 103912410 A CN103912410 A CN 103912410A
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- mixer
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- egr
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- Y02T10/121—
Abstract
The invention discloses an EGR (Exhaust Gas Recirculation) mixer of a dual-gas pickup structure. The ERG mixer is characterized by comprising a mixer housing and a mixer core, wherein a first exhaust gas inlet and a second exhaust gas inlet are formed in the sidewalls of the mixer housing, the mixer core is fixedly mounted in the mixer housing, a cavity is formed between the mixer core and the mixer housing and communicated with the first exhaust gas inlet and the second exhaust gas inlet, the mixer core is a venturi tube, a plurality of deflector holes are formed in the throat opening of the venturi tube so that the exhaust gas is capable of going into the mixer core, a fresh air inlet is formed at one end of the mixer core, and the exhaust gas is mixed with the fresh air in the mixer core and then the mixed gas is output via an outlet at the other end of the mixer core to supply gas to an engine. The ERG mixer of the dual-gas pickup structure is characterized in that two independent exhaust gas inlets are provided to realize dual-gas pickup and also can be applied for a sectional exhaust pipe to pick up gas independently, the venturi tube type mixer core is used for improving the mixing effect and effectively solving the problem that the EGR rate cannot be increased when gas is exhausted at a low speed.
Description
Technical field
The present invention relates to engine art, particularly a kind of two EGR mixer of getting depressed structure.
Background technique
A kind of mode that turbocharged and intercooled diesel engine is realized EGR (EGR) is by after the exhaust introducing intercooler before turbine, is called high pressure exhaust gas reverse.EGR is conducive to reduce the nitrogen oxide (NO in Exhaust Gas
x) and particulate (PT), fuel oil consumption does not raise again.
The object of engine EGR mixer is that the waste gas of introducing from outlet pipe is mixed with fresh air by EGR.
The most employing of existing EGR mixer increased a hole that connects waste gas on mixer body, the waste gas of introducing from engine exhaust pipe is directly guided to air inlet tube, then mix by mixer core, the most mixed waste gas provides to suction tude, to realize mixing of fresh air and waste gas.
The major defect that EGR mixer prior art exists:
1. at present engine exhaust pipe mostly is segmented, and the regional center (RC) that existing EGR mixer is got waste gas is limited to single-point on outlet pipe and gets gas, and that can not realize every section of segmented outlet pipe gets separately gas, and the exhausted air quantity therefore got is few, it is abundant not to mix;
2. in the time of low exhaust velocity, between waste gas and fresh air, pressure reduction is less, therefore cannot strengthen EGR and lead;
3. common mixer core mixed effect is bad;
4. single other functions that can not realize outside mixer of structure.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, realizes two functions of getting gas, raising mixed effect, increasing mixer by the present invention; When effectively realizing the dynamic control that EGR leads and effectively improving low exhaust velocity, cannot strengthen the problem that EGR leads.
For achieving the above object, the invention provides a kind of two EGR mixer of getting depressed structure, it is characterized in that, comprising: mixer shell, its sidewall is provided with the first waste gas inlet and the second waste gas inlet; Mixer core, it is fixedly installed in mixer shell, forms cavity between the two, and this cavity is communicated with the first waste gas inlet and the second waste gas inlet; Mixer core is a venturi type pipe, and aditus laryngis place is provided with some pod apertures, enters in mixer core for waste gas; Mixer core one end is fresh air inlet, after waste gas mixes in mixer core with fresh air, is motor air feed from the delivery outlet of the mixer core the other end.
In technique scheme, the cavity forming between mixer shell and mixer core is become two independent chambers by a baffle for separating, and two chambers are communicated with the first waste gas inlet and the second waste gas inlet respectively.
In technique scheme, the first waste gas inlet and the second waste gas inlet are got gas from the different pipe sections of outlet pipe respectively.
In technique scheme, pod apertures towards arrange and guarantee that waste gas vertical mixer core curved wall enters in mixer core.
In technique scheme, mixer shell is also integrated air inlet connecting tracheae, its one end is communicated with the delivery outlet of mixer core, and the other end is motor air feed as delivery outlet.
In technique scheme, before the fresh air inlet of mixer core, be provided with the parts for controlling FAI Fresh Air Intake amount.
Further, be an electronic throttle for controlling the parts of FAI Fresh Air Intake amount.
Compared with prior art, the present invention has following beneficial effect:
By two independent waste gas inlets are set, two get gas to realize, can be used for segmented outlet pipe and get separately gas; Utilize venturi-type mixer core to improve mixed effect, and cannot strengthen the problem that EGR leads while effectively improving low exhaust velocity; Simultaneously integrated air inlet tube, mixer shell and air inlet tube are integrated, and minimizing part, lowers the mutual vibrating noise of many Assembly of the parts, has alleviated engine weight, makes complete machine structure simpler, has increased the function of mixer; And at gas-entered passageway, electronic throttle is set, and can effectively realize the dynamic control that EGR leads, reduce motor NO
xdischarge.
Accompanying drawing explanation
Fig. 1 is the two EGR mixer structure schematic diagram of getting depressed structure of the present invention;
Fig. 2 be in Fig. 1 of the present invention A-A to cross-sectional view;
Fig. 3 be in Fig. 1 of the present invention B-B to cross-sectional view;
Fig. 4 is that the two EGR mixers of getting depressed structure of the present invention are installed the schematic diagram after electronic throttle;
Mark by reference to the accompanying drawings the following drawings mark thereon:
1-mixer shell, 11-the first waste gas inlet, 12-the second waste gas inlet, 13-air inlet connecting pipeline section, 2-mixer core, 21-dividing plate, 22-pod apertures, 3-is provided with the FAI Fresh Air Intake passage of electronic throttle.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.
As Figure 1-3, two EGR mixer of getting depressed structure of the present invention is made up of mixer shell 1 and venturi type mixer core 2.Wherein on mixer shell 1 sidewall, have the first waste gas inlet 11 and the second waste gas inlet 12, mixer shell 1 is also integrated air inlet tube, i.e. air inlet connecting pipeline section 13.The cavity between mixer shell 1 and mixer core 2 is separated into independent two chambers by dividing plate 21, and these two chambers are connected with the first waste gas inlet 11 and the second waste gas inlet 12 respectively.Between mixer shell 1 and mixer core 2, fix with locating stud, prevent from relatively rotating, to keep two-way waste gas to be communicated with separately with corresponding chamber all the time.Mixer core 2 adopts venturi-type structure, and one port enters for fresh air, and another port is connected with air inlet connecting pipeline section 13.The appropriate waste gas pod apertures 22 of leading to mixer core inside is evenly set at the aditus laryngis place of mixer core 2 simultaneously.And pod apertures 22 is all towards waste gas inlet center, direction consistent with airflow direction (the direction setting of pod apertures 22 can guarantee that waste gas all enters mixer core 2 along vertical mixer core curved wall direction), be conducive to reduce resistance, make whole air-flow path more unobstructed.
In working procedure, the first waste gas inlet 11 and the second waste gas inlet 12 are got separately gas from the different pipe sections of outlet pipe respectively.The waste gas that two-way is got separately enters respectively two independent chambers between mixer shell 1 and mixer core 2, and enter near the interior separately fresh air with pod apertures 22 of mixer core 2 by pod apertures 22 and mix, mixed two-way gas merges into a road mixed gas in mixer core 2, has realized secondary mixing.Well-mixed gas is motor air feed through air inlet connecting pipeline section 13.
Within two EGR mixer of getting depressed structure of the present invention being described respectively in low engine speed below and how making EGR lead under two kinds of special states at a high speed and remaining on certain standard scope.
Low engine speed: mixer core 2 adopts venturi-type structure, its in-core can produce negative pressure, outer core air-flow can be sucked to in-core, particularly in the time that low engine speed is moved, delivery temperature is low, exhaust pressure is large not, this structure can effectively improve the air inflow of waste gas, and assurance EGR leads can be lower than critical field.
High engine speeds: as shown in Figure 4, two EGR mixers of getting depressed structure of the present invention are connected with the FAI Fresh Air Intake passage 3 that electronic throttle is installed, and control the aperture of electronic throttle by engine electronic control unit (ECU).When motor is at a high speed time, air displacement is larger, therefore the exhausted air quantity that enters mixer core 2 is also larger, now, according to required air inflow, the aperture of electronic throttle is carried out to suitable adjustment, adjust the air inflow of fresh air, control overall air inflow, to avoid EGR to lead higher than critical field, cause motor NO
xdischarge increase even and exceed standard.
Disclosed is above only a specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (7)
1. two EGR mixers of getting depressed structure, is characterized in that, comprising:
Mixer shell, its sidewall is provided with the first waste gas inlet and the second waste gas inlet;
Mixer core, it is fixedly installed in described mixer shell, forms cavity between the two, and this cavity is communicated with described the first waste gas inlet and the second waste gas inlet; Mixer core is a venturi type pipe, and aditus laryngis place is provided with some pod apertures, enters in mixer core for waste gas; Mixer core one end is fresh air inlet, after waste gas mixes in mixer core with fresh air, is motor air feed from the delivery outlet of the mixer core the other end.
2. two EGR mixer of getting depressed structure according to claim 1, it is characterized in that, the cavity forming between described mixer shell and mixer core is become two independent chambers by a baffle for separating, and two chambers are communicated with described the first waste gas inlet and the second waste gas inlet respectively.
3. two EGR mixer of getting depressed structure according to claim 1, is characterized in that, described the first waste gas inlet and the second waste gas inlet are got gas from the different pipe sections of engine exhaust pipe respectively.
4. two EGR mixer of getting depressed structure according to claim 1, is characterized in that, described pod apertures towards arrange and guarantee that the vertical mixer core curved wall of waste gas enters in mixer core.
5. two EGR mixer of getting depressed structure according to claim 1, is characterized in that, described mixer shell is also integrated air inlet connecting tracheae, and its one end is communicated with the delivery outlet of mixer core, and the other end is motor air feed as delivery outlet.
6. two EGR mixer of getting depressed structure according to claim 1, is characterized in that, is provided with the parts for controlling FAI Fresh Air Intake amount before the fresh air inlet of described mixer core.
7. two EGR mixer of getting depressed structure according to claim 6, is characterized in that, described is an electronic throttle for controlling the parts of FAI Fresh Air Intake amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006731.2A CN103912410B (en) | 2013-01-09 | 2013-01-09 | A kind of two EGR mixer getting depressed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310006731.2A CN103912410B (en) | 2013-01-09 | 2013-01-09 | A kind of two EGR mixer getting depressed structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912410A true CN103912410A (en) | 2014-07-09 |
| CN103912410B CN103912410B (en) | 2016-06-08 |
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| CN201310006731.2A Active CN103912410B (en) | 2013-01-09 | 2013-01-09 | A kind of two EGR mixer getting depressed structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003361A (en) * | 2015-08-10 | 2015-10-28 | 广西玉柴机器股份有限公司 | Integrated EGR (exhaust gas recirculation) mixer |
| CN105673265A (en) * | 2016-01-20 | 2016-06-15 | 中国重汽集团济南动力有限公司 | Engine exhaust gas mixing device |
| CN107165751A (en) * | 2017-05-27 | 2017-09-15 | 东风商用车有限公司 | A kind of integrated blender of multi-fluid |
| CN108266280A (en) * | 2018-03-07 | 2018-07-10 | 吉林大学 | A kind of EGR rate self-checking device of engine transient loading procedure |
| CN109488490A (en) * | 2018-10-29 | 2019-03-19 | 安徽江淮汽车集团股份有限公司 | A kind of engine exhaust-gas recirculating system mixed structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273558A (en) * | 2004-03-25 | 2005-10-06 | Mitsubishi Fuso Truck & Bus Corp | Internal combustion engine with exhaust gas recirculation system |
| DE102007035556A1 (en) * | 2007-07-28 | 2009-01-29 | Daimler Ag | Mixing apparatus for adding exhaust gas recirculation flow into charge air flow of internal-combustion engine, has connecting tube running transverse through passage channel and connecting inlet opening with one of chambers |
| CN202611934U (en) * | 2012-05-22 | 2012-12-19 | 广西玉柴机器股份有限公司 | Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system |
| CN202645779U (en) * | 2012-05-03 | 2013-01-02 | 第一拖拉机股份有限公司 | Diesel engine exhaust gas recirculation mixer |
| CN203098081U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | EGR mixer of double gas taking structure |
-
2013
- 2013-01-09 CN CN201310006731.2A patent/CN103912410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273558A (en) * | 2004-03-25 | 2005-10-06 | Mitsubishi Fuso Truck & Bus Corp | Internal combustion engine with exhaust gas recirculation system |
| DE102007035556A1 (en) * | 2007-07-28 | 2009-01-29 | Daimler Ag | Mixing apparatus for adding exhaust gas recirculation flow into charge air flow of internal-combustion engine, has connecting tube running transverse through passage channel and connecting inlet opening with one of chambers |
| CN202645779U (en) * | 2012-05-03 | 2013-01-02 | 第一拖拉机股份有限公司 | Diesel engine exhaust gas recirculation mixer |
| CN202611934U (en) * | 2012-05-22 | 2012-12-19 | 广西玉柴机器股份有限公司 | Air inlet connecting pipe of engine exhaust gas recirculation (EGR) system |
| CN203098081U (en) * | 2013-01-09 | 2013-07-31 | 广西玉柴机器股份有限公司 | EGR mixer of double gas taking structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003361A (en) * | 2015-08-10 | 2015-10-28 | 广西玉柴机器股份有限公司 | Integrated EGR (exhaust gas recirculation) mixer |
| CN105673265A (en) * | 2016-01-20 | 2016-06-15 | 中国重汽集团济南动力有限公司 | Engine exhaust gas mixing device |
| CN107165751A (en) * | 2017-05-27 | 2017-09-15 | 东风商用车有限公司 | A kind of integrated blender of multi-fluid |
| CN108266280A (en) * | 2018-03-07 | 2018-07-10 | 吉林大学 | A kind of EGR rate self-checking device of engine transient loading procedure |
| CN108266280B (en) * | 2018-03-07 | 2023-12-01 | 吉林大学 | EGR rate automatic regulating apparatus of diesel engine transient loading process |
| CN109488490A (en) * | 2018-10-29 | 2019-03-19 | 安徽江淮汽车集团股份有限公司 | A kind of engine exhaust-gas recirculating system mixed structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103912410B (en) | 2016-06-08 |
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